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The Undeclared War is set to return to Channel 4 for a second series, TV Zone understands. The recommission has not been confirmed by Channel 4 at time of writing.

According to publicly available production listings, the second series is set to enter production in early 2024. Casting and story details have not been revealed. Series 1 casting was led by Hannah Khalique-Brown Simon Pegg, Maisie Richardson-Sellers, Adrian Lester, Alex Jennings, Mark Rylance and Kerry Godliman.

Set in 2024, the first series of The Undeclared War tracks a leading team of analysts buried in the heart of GCHQ, secretly working to ward off a series of cyber-attacks on the UK in the run up to a general election.

When a routine stress test of internet infrastructure goes awry 21-year-old GCHQ intern Saara Parvin (played by Hannah Khalique-Brown) suddenly finds herself operating on the invisible frontier of high-stakes cyber warfare.

In a thrilling cat and mouse game, Saara and the team at GCHQ must try to stay one step ahead and anticipate their opponents’ every hidden move. The clock is ticking as a battle with high stakes and unpredictable enemies takes place entirely online, with very real consequences. But how do you win a war most of the public don’t know you’re fighting?

TV Zone approached Channel 4 for comment. Series 1 of The Undeclared War is available to stream on Channel 4 online.

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